Alden's original flow calibration facility, constructed over 100 years ago, still operates as the Hooper Facility. Flow is supplied from a 150-acre reservoir through a 40-inch penstock, which provides a static head of 15 to 28 ft depending on test line location. Water temperature varies seasonally from 32° to 75°F. Low water temperature in combination with low differential heads measurable due to the low noise gravity flow allow low Reynolds number testing.
Test line capabilities: